9f7425c152
Tests arm64 specific, contiguous bit based large pages as well. Change-Id: I09edad8cfde6c23a259f1f32cfc97974d9cb63c3
82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <sys/ipc.h>
|
|
#include <sys/shm.h>
|
|
#include "../util.h"
|
|
|
|
#define PAGE_SHIFT_64K 16
|
|
#define PAGE_SIZE_64K (1UL << PAGE_SHIFT_64K)
|
|
|
|
#define PAGE_SHIFT_2M 21
|
|
#define PAGE_SIZE_2M (1UL << PAGE_SHIFT_2M)
|
|
|
|
#define PAGE_SHIFT_32M 25
|
|
#define PAGE_SIZE_32M (1UL << PAGE_SHIFT_32M)
|
|
|
|
#define PAGE_SHIFT_1G 30
|
|
#define PAGE_SIZE_1G (1UL << PAGE_SHIFT_1G)
|
|
|
|
int trial_num;
|
|
|
|
int shmat_thp(char **argv, size_t page_size)
|
|
{
|
|
int ret;
|
|
key_t key;
|
|
int shmid;
|
|
struct shmid_ds shmid_ds;
|
|
char *addr_shmget;
|
|
|
|
key = ftok(argv[0], 0);
|
|
|
|
shmid = shmget(key, page_size, IPC_CREAT | 0660);
|
|
NG(shmid != -1, "shmget failed\n");
|
|
|
|
addr_shmget = shmat(shmid, NULL, 0);
|
|
NG(addr_shmget != (void *)-1, "shmat failed\n");
|
|
|
|
addr_shmget[0] = 'z';
|
|
NG(__atomic_load_n(addr_shmget, __ATOMIC_SEQ_CST) == 'z',
|
|
"memory access failed\n");
|
|
|
|
printf("large page request, trial#: %03d, addr: %016lx, size: %ld\n",
|
|
trial_num++, (unsigned long)addr_shmget, page_size);
|
|
|
|
ret = shmdt(addr_shmget);
|
|
NG(ret != -1, "shmdt failed\n");
|
|
|
|
ret = shmctl(shmid, IPC_RMID, &shmid_ds);
|
|
NG(ret != -1, "shmctl failed\n");
|
|
|
|
return 0;
|
|
fn_fail:
|
|
return 1;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int ret;
|
|
|
|
ret = shmat_thp(argv, PAGE_SIZE_64K);
|
|
NG(ret == 0, "shmat_thp failed, size: %ld\n",
|
|
PAGE_SIZE_64K);
|
|
|
|
ret = shmat_thp(argv, PAGE_SIZE_2M);
|
|
NG(ret == 0, "shmat_thp failed, size: %ld\n",
|
|
PAGE_SIZE_2M);
|
|
|
|
ret = shmat_thp(argv, PAGE_SIZE_32M);
|
|
NG(ret == 0, "shmat_thp failed, size: %ld\n",
|
|
PAGE_SIZE_32M);
|
|
|
|
ret = shmat_thp(argv, PAGE_SIZE_1G);
|
|
NG(ret == 0, "shmat_thp failed, size: %ld\n",
|
|
PAGE_SIZE_1G);
|
|
|
|
return 0;
|
|
fn_fail:
|
|
return 1;
|
|
}
|